I don't know what you're talking about. Could you show us a screenshot? Maybe that would help?

problem is you cant see them, it's just a very small spot kind of away from the mtn biome, that nearly instantly strikes you with the freezing debuff. Specks of space, as I mentioned about as big as a toon.. As if the temp overrlay is off by a few tiles when it gets generated, but since you cant see it problems with it may not be readily apparent
this is a very very small mtn biome, surrounded nearly entirely by meadow.
My hunch is that how temp is generated and distributed is the issue, its not aligning, one or both are off a few tiles, columns and rows. Mesh not aligning.

I'm kind of less concerned about the cold-specks atm as I am for a pass on the mechanics of 'freezing'. For me it seems sometimes you end up with a freeze you can't 'shake' it takes several seconds more than it typically would, or does. It can vary for how long you stay in, and how long it was since you crossed into cold. How cold the cold is, how far you get from the cold when shaking off the effect. I feel like there are 3-4 factors deciding that fate if or when or how it gets applied.
Meaning if you run in to BF at the same elevation it sticks to you a bit longer, than if you run quickly downhill into something like a meadow area.
But even those situations and circumstances can get varied results when shaking the effect.
I don't get the notion that it's getting applied equally, in a buggish way. One of the factors is getting stuck figuring out what to do. How to vote.

There is cold and freezing. If you naked corpse run to a mountain, and you are cold to start with and get wet, you are in trouble real fast.

Are you playing on a server?
Are you running any mods?